Starting the motor without the electical...question?
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,614
Likes: 7
From: South Florida
Starting the motor without the electical...question?
Got the motor in the frame, want to test fire it.
I have the starter hooked up, all the accessories, but no wiring.
What is the bare minimum electrical connections I need to run the motor. Here is what I am thinking, please tell me what you think.
I have a hot lead to the starter from the battery.
I have a lead from the starter to the coil.
I have a ground wired to the frame.
Now do in have a hot lead from the battery to the coil?
I realize the alternator won't charge the battery, but that is ok.
I have the starter hooked up, all the accessories, but no wiring.
What is the bare minimum electrical connections I need to run the motor. Here is what I am thinking, please tell me what you think.
I have a hot lead to the starter from the battery.
I have a lead from the starter to the coil.
I have a ground wired to the frame.
Now do in have a hot lead from the battery to the coil?
I realize the alternator won't charge the battery, but that is ok.
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
you need to put a switch of some kind between the battery and coil. Got to be able to kill it if something blows up.
Some sort of temp gauge and oil pressure monitoring is a good idea too
Some sort of temp gauge and oil pressure monitoring is a good idea too
Racer
Joined: Jan 2005
Posts: 370
Likes: 77
From: Perth Western Australia
The last time I tried this the coil got really hot...any ideas why?[/QUOTE]
Power to the coil normally has a resistance wire inline dropping the voltage to the coil down to about 8 -9 volts. The wire running from the starter to the coil is only used to supply full voltage to the coil when engine cranking.
If you are using a wire direct from the battery to the coil then this is why your coil is getting hot. A simple fix would be to use a ballast resister between the battery and coil.
Power to the coil normally has a resistance wire inline dropping the voltage to the coil down to about 8 -9 volts. The wire running from the starter to the coil is only used to supply full voltage to the coil when engine cranking.
If you are using a wire direct from the battery to the coil then this is why your coil is getting hot. A simple fix would be to use a ballast resister between the battery and coil.
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
i'd also recommend a good fire extinguisher-just in case!
jeff
i just read your name-where there's smoke there's fire-definitely get an extinguisher!
jeff
i just read your name-where there's smoke there's fire-definitely get an extinguisher!
Last edited by jnb5101; Sep 18, 2007 at 11:56 AM.
Safety Car
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
Did just what you're doing when I was at that stage of the resto. I rigged up a panel with the gauges, plus a toggle switch(on/off), panel light(to remind me the toggle is on), and a push button(starting).
Good thing I fired it up this way, because I had to pull the heads. Much easier without having to lean over the fender.
Let us know how it goes
Good thing I fired it up this way, because I had to pull the heads. Much easier without having to lean over the fender.
Let us know how it goes
Drifting
Joined: Aug 2000
Posts: 1,758
Likes: 4
From: Medford, Or
Got the motor in the frame, want to test fire it.
I have the starter hooked up, all the accessories, but no wiring.
What is the bare minimum electrical connections I need to run the motor. Here is what I am thinking, please tell me what you think.
I have a hot lead to the starter from the battery.
I have a lead from the starter to the coil.
I have a ground wired to the frame.
Now do in have a hot lead from the battery to the coil?
I realize the alternator won't charge the battery, but that is ok.
I have the starter hooked up, all the accessories, but no wiring.
What is the bare minimum electrical connections I need to run the motor. Here is what I am thinking, please tell me what you think.
I have a hot lead to the starter from the battery.
I have a lead from the starter to the coil.
I have a ground wired to the frame.
Now do in have a hot lead from the battery to the coil?
I realize the alternator won't charge the battery, but that is ok.
http://www.vetteworksonline.com/acrobat/LS1start1.wmv
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Verdad Gallardo
Tech Contributor
Joined: Aug 1999
Posts: 14,379
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
The starter is activated by putting a switched lead to the "S" terminal.
Thread Starter
Drifting
Joined: Sep 2002
Posts: 1,614
Likes: 7
From: South Florida
Thanks Lars.
I had correct wiring from the diagram, but I totally missed the ballast resister. I'll get that straight!
Just for everyone's info...Lars is largely responsible for the progress of this entire restoration. He has provided info on every obstacle I have come to.
Thanks again guys.
I had correct wiring from the diagram, but I totally missed the ballast resister. I'll get that straight!
Just for everyone's info...Lars is largely responsible for the progress of this entire restoration. He has provided info on every obstacle I have come to.
Thanks again guys.
